Title :
The role of the persistent polarization in dielectric charging and relaxation of radioelectrets
Author :
Boev, S.G. ; Tyutnev, A.P. ; Paderin, V.A. ; Popov, O.N.
Author_Institution :
Tomsk Polytech. Inst., USSR
Abstract :
Charge accumulation in polar dielectrics irradiated with charged particles is accompanied by formation of the slow component of the persistent polarization Ps which escapes registration by routine measurements of the permittivity ∈. Some ceramics and glasses with ∈<10 feature extremely high P s on the order of 10-7 C/cm2. The present analysis is based on a two-layer dielectric with a constant conductivity of the irradiated region while Ps is described by the Debye model. The appearance of the Ps substantially affects the build-up rate of the space charge in a dielectric
Keywords :
dielectric polarisation; dielectric relaxation; electrets; electron beam effects; permittivity; space charge; Debye model; charge accumulation; constant conductivity; electron radiation; permittivity; persistent polarization; polar dielectrics; radioelectrets; relaxation; space charge build-up rate; Ceramics; Charge measurement; Conductivity; Current measurement; Dielectric constant; Dielectric measurements; Glass; Particle measurements; Permittivity measurement; Polarization;
Conference_Titel :
Electrets, 1991. (ISE 7) Proceedings., 7th International Symposium on (Cat. No.91CH3029-6)
Conference_Location :
Berlin
Print_ISBN :
0-7803-0112-9
DOI :
10.1109/ISE.1991.167313
